Modified FILTERSIM Algorithm for Unconditional Simulation of Complex Spatial Geological Structures

Peyman Mohammadmoradi, Mohammadreza Rasaei

Institute of Petroleum Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, North Kargar Ave., Tehran, Iran.

DOI: 10.4236/gm.2012.23008                

Abstract

Facies and fracture network modeling need robust, realistic and multi scale methods that can extract and reproduce complex relations in geological structures. Multi Point Statistic (MPS) algorithms can be used to model these high order relations from a visually and statistically explicit model, a training image. FILTERSIM as a pattern based MPS method attracts much attention. It decreases the complexity of computation, accelerates search process and increases CPU per-formance compare to other MPS methods by transferring training image patterns to a lower dimensional space. The results quality is not however as satisfactory. This work presents an improved version of FILTERSIM in which pattern extraction, persisting and pasting steps are modified to enhance visual quality and structures continuity in the realiza-tions. Examples shown in this paper give visual appealing results for the reconstruction of stationary complex struc-tures.

Keywords

FILTERAIM; MPS; Pattern Persisting; Training Image; Entropy Plot

Conflicts of Interest

The authors declare no conflicts of interest.

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